<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			#box{
				width: 200px;
				height: 100px;
				background-color: aqua;
			}
			.padding{
				padding: 15px 25px 35px 45px;
			}
			.margin{}
			.border{
				border-style: solid;
				border-color: red;
				border-width: 20px 30px 40px 50px;
			}
			#box1 {
				width: 200px;
				height: 100px;
				border: 1px solid red;
				margin: 30px;
			}
			#box2{
				width: 200px;
				height: 100px;
				border: 1px solid blue;
				margin: 50px;
			}
			
			.container{
				width: 1200px;
				overflow: hidden;
			}
			#content{
				width: 200px;
				height: 100px;
				background-color: aqua;
			}
			#left{
				width: 300px;
				height: 200px;
				background-color: red;
				float: left;
				padding: 15px;
				box-sizing: border-box;
			}
			#right{
				width: 800px;
				height: 200px;
				background-color: blue;
				float: right;
				padding: 15px;
				box-sizing: border-box;
			}
		</style>
	</head>
	<body>
		<div class="container">
			<div id="left">左侧内容</div>
			<div id="right">右侧内容</div>
		</div>
		
		<!-- <div class="container">
			<div id="content"></div>
		</div> -->
		
		<!-- <div class="container">
			<div id="box1">
				
			</div>
			<div id="box2">
				
			</div>
		</div>
		<div class="container">
			<div id="box" class="padding border"></div>
		</div> -->
	</body>
</html>